--- /dev/null
+/* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
+
+ grouptran2.c for the Openbox window manager
+ Copyright (c) 2003-2007 Dana Jansens
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ See the COPYING file for a copy of the GNU General Public License.
+*/
+
+#include <stdio.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <X11/Xatom.h>
+
+int main () {
+ Display *display;
+ Window main, grouptran, child, group;
+ XEvent report;
+ XWMHints *wmhints;
+
+ display = XOpenDisplay(NULL);
+
+ if (display == NULL) {
+ fprintf(stderr, "couldn't connect to X server :0\n");
+ return 0;
+ }
+
+ group = XCreateWindow(display, RootWindow(display, 0),
+ 0,0,1,1, 10, CopyFromParent, CopyFromParent,
+ CopyFromParent, 0, 0);
+
+ main = XCreateWindow(display, RootWindow(display, 0),
+ 0,0,100,100, 10, CopyFromParent, CopyFromParent,
+ CopyFromParent, 0, 0);
+ grouptran = XCreateWindow(display, RootWindow(display, 0),
+ 10,10,80,180, 10, CopyFromParent, CopyFromParent,
+ CopyFromParent, 0, 0);
+ child = XCreateWindow(display, RootWindow(display, 0),
+ 20,20,60,60, 10, CopyFromParent, CopyFromParent,
+ CopyFromParent, 0, 0);
+
+ XSetWindowBackground(display,main,WhitePixel(display,0));
+ XSetWindowBackground(display,grouptran,BlackPixel(display,0));
+ XSetWindowBackground(display,child,WhitePixel(display,0));
+
+ XSetTransientForHint(display, grouptran, RootWindow(display,0));
+ XSetTransientForHint(display, child, grouptran);
+
+ wmhints = XAllocWMHints();
+
+ wmhints->flags = WindowGroupHint;
+ wmhints->window_group = group;
+
+ XSetWMHints(display, main, wmhints);
+ XSetWMHints(display, grouptran, wmhints);
+ XSetWMHints(display, child, wmhints);
+
+ XFree(wmhints);
+
+ XMapWindow(display, main);
+ XMapWindow(display, grouptran);
+ XMapWindow(display, child);
+ XFlush(display);
+
+ while (1) {
+ XNextEvent(display, &report);
+ }
+
+ return 1;
+}